Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1990-08-17
1992-11-03
Howell, Janice A.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 58, 359 60, G02F 113
Patent
active
051612372
ABSTRACT:
A display device operating in accordance with the reset principle provides an array of pixels formed by an array of picture electrodes on the facing surfaces of two substrates with an electro-optical display medium therebetween. A matrix of row and column electrodes apply selection and data signals to the pixels and a system of auxiliary electrodes arranged parallel to the column electrodes apply an auxiliary voltage to the pixels prior to the selection signals. The picture electrodes are electrically coupled to the column electrodes and to the auxiliary electrodes via a plurality of first and second switching units, respectively. The first and second switching units are arranged perpendicular and parallel, respectively, to the column electrodes whereby artifacts are prevented while a larger effective surface area of the pixels is also obtained.
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Hartman Robert A.
Sakai Toru
Franzblau Bernard
Howell Janice A.
Mai Huy K.
U.S. Philips Corporation
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